Jeremiah mcilvain



animi itate fateut i (Bffire.

JEREMIAH MCILVAIN, OF CHURCHVILLE, `MARYLAN D f Letters Patent No. 85,393, datedDecember 29, 1868.- p i 'ANTI-FRICTION BOX FOR SHAF'ING,

l The Schedule referred to in these Letters Patent andmakng vpart of the same.

This inventionrelates to a new and'v improved box. -for' the shafting of machinery, and it has for its object the reduction of friction.

In the accompanying sheet of drawings, Figure 1 is a vertical section of my invention, taken in the linea x, iig. 2. Figure 2 is a horizontal section of the same, taken in the line y y, fig. l.

Similar letters of reference indicate like parts. A represents a shaft, having on its upper end the lower portion, B, of la box, said portion 4being` of circular form, and having an annular groove, a,forming a part of a circle in its transverse section, made in its upper surface to receive a series of balls, .0,(four, more for less.)

l The upper edge of B yhas an upright ledge, b, all around it, and it also is provided with a central hole, c, as shown in g. I, the use-of which will be presentlyshown.

D is .the upper part'of the box, which is'also of circular form, and hasV an annular recess, d, made in its under side, the inner surfacefof saidrecess being flat, or a plane whichrests or bears upon the ballsG, as, shown clearly in iig. 1.

On the upper surface of the part D of the box, there is a step, c, to receive a'mill-spindlc or other shafting of machinery, and from the centre of the face or under side f Dfa shaft or arbor, E,"depends, which extends down into the hole c, but does not reach its bottom.

The upper part D of the vbon is also provided with a' eover, F, of sheet-metal, or other suitable material, which extends doivn a triflebelow the upper edge of B, as shown in fig. 1, and has wings, f, attached .radially to vits exterior surface, to serve as dusters, and prevent the admission of dust between the two parts B D of the box.

'lhe balls C, it will bcsecingreatly diminish f1-ic? tion, and the shaft or arbor E keeps the 'upper part D of the box vin proper position, preventing any lateral movement of the saine, while the hele o will'contain oil to keep the shaft or arbor E in aproperly-lubricated state, andthe fans f, by preventing the admissionof. dust, insure the full benefit of the oil or other lubricating-material, the'latter being kept cleanthereby.

The lower shaft A, and consequently the wholebox, and shaftin g connected therewith, may be raised and. lowered by a lever, or any suitable'mechanism conl nected therewith.

Havingthns described iny-.invention,-

I claim as new, and desire to secure by 'Letters Patentfa 1. ,The anti-friction box, .composed oftwo. part-s, B D, provided respectively with grooves, d, of the form shown, with balls C placed between them, the pendent shaft or arbor E, attached to D, fitting-in' the hole 'c in `B, and the step e on D, for connecting a shaft to D, allconstrncted and arranged substantially as and for the purpose set forth.

2. The cover E, provided with thewingsf, and applied tothe upper box D, all constructed and arranged substantially as and for the purpose specified.

JEREMIAH MCILVAIN.-

VWitnessesr.

GEORGE W. McILvAI'N, Amun O. M. MGILVAIN 

